Root Cause Analysis of Accidents on Large-scale Complex Systems using Dual Vee Model

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  • <b>Dual Vee Model </b><b>を用いた大規模複雑システム事故の根本原因解析 </b>
  • Dual Vee Modelを用いた大規模複雑システム事故の根本原因解析
  • Dual Vee Model オ モチイタ ダイキボ フクザツ システム ジコ ノ コンポン ゲンイン カイセキ

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Root cause analyses of system failures are important from a viewpoint of prevention of recurrence of the failures and occurrence of similar failures. Five-why Analysis and Fault Tree Analysis are most popular however these analysis results depend on the skill of the analysts strongly because these use brain-storming method. The authors have proposed a root cause analysis method using Dual Vee Model, which has given a guidance in space systems applications to analyze and therefore the result less depends on the skill of the analyst. This paper demonstrates the results of the application of the method to failures of Nuclear Power Plants. This paper also proposes a chart to identify systems to which the method can be applied.

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